Small Strain Measurements Using Triaxial Apparatus
This paper presents a detailed testing methodology which can be used to determine the cyclic properties of soils at very small strains using triaxial apparatus. A discussion of specific...

Shear Moduli Measurements under True Triaxial Stresses
The effect of state of stress on the shear wave velocity and shear modulus of a dry sand was examined. Testing was performed in a large-scale triaxial device in which cubic soil samples...

Lab Measurements of Gmax Using Bender Elements
This paper describes in detail the installation and use of piezoceramic bender elements in a variety of standard geotechnical laboratory testing equipment at NGI (e. g. , triaxial, direct...

Cyclic Simple Shear, Torsional Shear and Triaxial�A Comparative Study
Many different testing apparatus are used to duplicate in laboratory soil samples the stress state generated in situ by earthquakes. A wide diversity of data has been generated and this...

Centrifuge Model Testing with Dynamic and Cyclic Loads
This paper examines the use of small-scale tests on centrifuges to study a wide range of problems in soil dynamics - including machine foundations, structures and explosion effects. The...

The Uplift Capacity of Helix Anchors in Sand
Results of field and laboratory investigations of the uplift capacity of helix anchors in sand are presented. Equipment and instrumentation were used to measure uplift load, anchor deflection...

Uplift Capacity of Helical Anchors in Clay and Silt
The results of a study on the uplift capacity of helical anchors in clay and silt are presented. Full-scale field tests and one-quarter scale laboratory tests were conducted in each soil...

Uplift Capacity of Shallow Offshore Foundations
Soil failure under upward loading is investigated by experimental laboratory tests. The problem of uplift capacity is considered in terms of effective stresses in soil skeleton and pore...

Resistance of Shallow Inclined Anchors in Clay
Some recent laboratory model test results for the ultimate pullout resistance of a square anchor inclined at angles of 0, 20, 50, 75, and 90 degrees with respect to the horizontal have...

The Impact of Demand-Side Management on Load Growth: Some Tentative Results
Demand-Side Management (DSM) programs including load management, conservation and strategic load growth are being implemented by a very large number of utilities for the mutual benefit...

Seismic Analysis of Concrete Face Rockfill Dams
In this article, the observed behavior of existing rockfill dams during earthquakes is compared with published data regarding the estimated seismic performance of several recently designed...

Design and Stability Evaluation of Balsam Meadow Dam
The proposed Balsam Meadow Dam is a 126 feet high concrete-faced rolled rockfill dam currently under construction for the Balsam Meadow hydroelectric project in California. Detailed field...

Rockfill Compression Tests and Other Aspects of the Design of Miel I Dam
The Miel I Dam, a high concrete face rockfill dam, is one of the main structures designed for the Miel I Hydroelectric Project in Colombia. Selection of dam type was based on technical...

Need a Dependable Backfill?Try a Flowable Fly Ash
Flowable fly ash is a relatively new cementitious structural backfill material. It can be used in water or in the dry and will flow into place without the usual labor-intensive activities...

Structural Vibrations Associated with Large Incubation Tanks
It is the purpose of this paper to describe the format of an investigation wherein the train of evidence led from an assumption of a strictly mechanical cause to an actual cause that was...

A Summary of the Seismic Qualification Utilities Group (SQUG) Program
In December of 1980, the Nuclear Regulatory Commission (NRC) initiated Unresolved Safety Issue (USI) A-46 to address the question of the seismic adequacy of equipment in 49 operating nuclear...

Obtaining Reliable Data from Fragility Tests
The parameters discussed in this paper are the same as those present in normal seismic qualification testing. These parameters behave differently in high level acceleration tests and their...

Earthquake Experience Data on Power and Industrial Structures: Applications to Seismic Design and Evaluation
An extensive study was conducted to document the seismic performance of typical power plant and industrial structures in selected recent strong earthquakes and to correlate the performance...

Impact on Test by Various Multiaxis Excitation
The purpose of this paper is to provide input guidelines in evaluating various types of multiaxis excitation on fragility level testing of electronic devices. There are many variables...

Seismic Design-Qualification of Non-Safety Related Items in Safety Related Envelope
This presentation pertains to Seismic Design-Qualification for those portions of structures, systems, or components in a Nuclear Plant whose continued function is not required but whose...

 

 

 

 

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